Portable electric light.



I. KORETZKY.

PORTABLE ELECTRIC LIGHT APPLICATION FILED JUNE 29, 1914.

being known as flash lights.

UNITED STATES PATENT GFFIOE.

ISRAEL KORETZKY. OF NEW YORK, N; Y., ASSIGNOR o LEWIS J. ivtomusolm'osNEWYOBK,N.Y.-

PORTABLE ELECTRIC LIGHTS To (/7/ /mm [tn/(1y concern:

Be it known that I. Isnxni. Komrrzin'. a subject of the Czar of- Russia.residing at New York. in'the county of New York and State of'Xew York.have invented certain new.and useful Improvements in Portable ElectricLights. of which the following is a specification.

My invention relates to portable electric lights. and particularly thoseof small dimensions and convenient shape for carrying in the pocket andfor carrying about in the hand when'in use. said lights commonly Indevices of this character the battery is separable from the casing-whichcarries the lamp. and has exposed contacts which make connection withthelamp terminals. one of these connections being permanently maintainedwhile the battery is in the casing-and the other connection a manuallyoperable circuit-closer which makes connection with an exposed terminalof the battery. The push buttons and other circuit-closers connnonlyemployed are only adapted for temporarily closing the circuit so thatthe light can be used for only a short period and will immediately goout ,as soon. as the push button or other device is released. Otherdifiiculties that are experienced with the ordi nary type of circuitcloser mentioned are. that the actual effecting of a contact at thedesired moment is uncertain. the contact is liable to accidentallybecome closed and remain closed. without the knowledge of the user.thereby exhausting the battery. and also some of these circuit-closersare so delicately constructed as to become impaired at the slightestprovocation.

My invention provides a portable electric light of the type mentionedwhich has embodied therein a simple. yet effective circuit-closer whichis absolutely positive in its operation. easy to manipulate and isadapted to be positioned so that the circuit will remain closed if it isso desired. thereby enabling one to use the light for an extended periodof time without continually maintaining pressure on the button or othermeans for operating the circuit closer.

Referring to the drawings annexedhereto and forming a part of thisspecification. and in which I have illustrated the preferred embodimentof my invention: Figure 1 is a longitudinal section and circuit-closer.

Specification of Letters Patent.

'the circuit-closer being in the open position.

Fig.2 is a front elevation view partly in section showing thecircuit-closer in the closed position. Fig. 3 is a view showing thedetailsof the circuit-closer. Fig. 1': is a view similar to that shownin Fig. 2 but showing a modified form of circuit-closer. Fig. 5 shows amodified form of spring con tact device.

Referring to the drawings: The casing l is provided at the top thereofwith a threaded socket 2 adapted to receive and retain in place theusual type of incandescent electric light bulb while the bottom of thesaid casing 1 is provided with a hinge latch door 4 which is adapted toretain the bat tery in place within the casing when the said door 4 isclosed. The battery 5 is of the usual type having the exposed terminals6 and T the former being adapted to form a permanent contact with theterminal S on the bulb, and the latter being adapted to be engaged bythe circuit-closer to light the lamp bulb.

The circuit-closer 9 is disposed as is usual in the end of the casing 1in a suitable position to engage the exposed terminal 7 of the battery.and is composed of the leaf spring member 10 suitably secured to thecasing l at. 11 by solder or screws. The leaf spring member 10 has.disposed at its upper end directly opposite to the said terminal 7. athreaded boss 12 adapted to receive the push button 13 having thethreaded shank H. the end of which is adapted to engage the terminal-7when the push button 13 is pushed in or when the said button is turnedso as to screw the said shank through the. said boss into permanentengagement with the terminal 7. Thus it will be evident that when itonly desired to light the light for a short period of time it is onlynecessary to simply push the button 13 in the usual manner. however ifit is desired to use the light for an extended period of time the simpleoperation of screwing the shank 14; against the terminal 7 serves tokeep the light lighted without maintaining. constantpressure on thebutton 13 extending through the opening 15 in the casing 1.

In Fig. 'i' T have illustrated a 1nodification of the circuit-closer inthat-T have provided the shank 1-! with a collar 16 which is of largerdiameter than the opening 15 in the casing 1 thereby providing againstthe Patented July 13, 1915. Application filed June 29. 1914. Serial No.848.006. I

accidental unscrewing of the said shank ll completely from the boss1'2.j-in which case it might easily become lost or misplaced.

It is to be understood that I do not limit myself to the specificconstruction and a1 rangement of parts herein illustrated and described,but may resort to such modifications as fall Within the scope of myclaim.

I claim:

'ln a-portable electric light, a casing contaii'iing a battery llzulllgcontacts, said cas ing having apush button opening, a spring contactcomprising a spring mounted on the inner wall of said casing and havinga threaded aperture adjacent the opening in said casing, a push buttonhaving a threaded shank fitting in said aperture and having a knobprojecting through said opening, and a collar fixed on said shankbetween said casing and spring and larger than said push button openingwhereby said push button is prevented from beingcompletely unscrewed andremoved from said casing, substantially as described.

In testimony whereof I have affixed my signature in the presence of twoWitnesses.

ISRAEL KORETZKY. \Vitnesses FLORENCE GREEK, HELEX GREER.

